Banana bunchy top is caused by

Banana is

Banana is

Banana is

"Curly top" of tobacco is caused by "A"and it through a plant via "B". A and B are

"Curly top" of tobacco is caused by "A"and it spreads through a plant via "B". A and B are

Banana is rich in

Presently, the price of a dozen of bananas has increased by 6 rupees. If the previous price of a dozen of bananas was x rupees, find the cost of 2x dozen of bananas.